The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2003
Filed:
Jun. 28, 2000
Applicant:
Inventors:
Peter E. Schmidt, Newtonville, MA (US);
Pamela R. Lipson, Cambridge, MA (US);
John C. Bowman, Lexington, MA (US);
Assignee:
Teradyne, Inc., Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/188 ;
U.S. Cl.
CPC ...
G01N 2/188 ;
Abstract
An optical system for use in an inspection system is described. The optical system includes an imaging system which may be provided as a multi-spectral band pass image recording system and a lighting system which includes at least one coaxial light and at least one side light to provide spectral discrimination and to provide contrast between a first surface made from a first material and a second surface made from a second different material.